It marks the first time the two former Beatles have reunited in the studio since McCartney appeared on Starr's 2010 album Y Not. McCartney played bass guitar on the song Peace Dream, and sang on Walk With You.

The new collaboration is believed to be for Starr's forthcoming album, the follow-up to 2015's Postcards From Paradise.

Starr tweeted images of him, McCartney and Joe Walsh in the drummer's studio, thanking them for taking part in the recordings.

The new Ringo Starr album is being produced by Bruce Sugar, who posted an image of himself with Starr and McCartney on Facebook.